The present invention relates to a handle for a radiation detector including a body grasped by a user, a first hook coupled to a coupling groove formed on a radiation detector body, a button member moving according to the user's manipulation in such a manner as to release a coupling state of the handle, a second hook engaging with the button member in such a manner as to be coupled to a coupling groove formed on the radiation detector body, and a double locking part disposed inside the body, whereby the handle can be detachably coupled to the radiation detector body, irrespective of its attaching direction, and the radiation detector can be rapidly and conveniently carried by the user.